[Elecraft] question for psk users

goldtr8 at charter.net goldtr8 at charter.net
Sat May 5 08:27:32 EDT 2012


HI Roland,

When I spend some radio time this weekend I send them to you.

There are two sets of macros.   One for HRD for the radio commands, then 
a set in DM780 to use them.

They are not perfect macros, but they work for me.   I was just happy 
that I figured them out, I kinda programmed them with the hunt and peck 
method.

If anyone else on the list wants a copy send me a note and I will send 
them to you also.  I would like to be able to give a little back to this 
list as I get way more from all you gents.

Cheers
Don

~73
Don
KD8NNU


On Thu, May 3, 2012 at 10:24 AM, Rowland R Johnson wrote:

> Don,
>
> Any chance of getting a copy of the macros you developed for HRD?
>
> I was getting ready to do something similar. I have the K3, HRD, 
> DM780, and a SignalLink USB. I ordered the 200 Hz roofing filter 
> yesterday. The plan was to use the DM780 waterfall to locate a signal 
> then use the Lo and Hi cut on the K3 to narrow the band to < 200 Hz 
> around the station. I'd be counting on the K3 switching to the 200 Hz 
> filter when the band got narrow enough. I was concerned that when the 
> K3 switches to the 200 Hz filter that frequency would change resulting 
> in the target signal moving out of the narrow band. I talked to 
> Elecraft, but I'm not sure that I got my question across; so I'm still 
> not sure it'll work like I want it to. Your solution doesn't depend on 
> the frequency not changing.
>
> Using both a waterfall at 3 kHz and then a 200 Hz filter really is the 
> best solution.
>
> Thanks,
>
> Rowland,
> AG6KN
> rowland at lascanadas.org
>
> On 5/2/2012 4:16 PM, goldtr8 at charter.net wrote:
>> I have macros built in HRD that allows me to quickly center a PSK RX 
>> and
>> then I pop to mhy 200 hz filter to work them when every the adjacent
>> signals are messing with my decode.  I constantly change between many
>> filter choices as necessary via macros in the software.
>>
>> I bought the 200 hz filter last year at Dayton after Wayne spent a 
>> few
>> minutes of time with me explaining how to use the filters better to 
>> my
>> advangate.
>>
>> Now I don't care what the other guys do because the K3 just does what 
>> it
>> does best.
>>
>> ~73
>> Don
>> KD8NNU
>>
>>
>> On Wed, May 2, 2012 at 7:45 AM, briana wrote:
>>
>>> Guys,
>>>
>>> This rational is bogus.  The PSK users have to get used to decoding
>>> one signal at a time with narrow filters if that's what is 
>>> necessary.
>>> To expect to have 2 or 3 KHz free of strong signals is crazy.
>>>
>>> Dealing with this reality puts the burden on the receiving end.  No
>>> way can you control what the rest of the wold does.  This isn't the
>>> Magic Kingdom.
>>>
>>> Given that PSK is a narrow bandwidth mode, why not use that to your
>>> advantage?
>>>
>>> Other modes deal with strong adjacent signals, why not PSK?
>>>
>>> You bought a K3 for its high dynamic range and high adjacent signal
>>> handling capability.  Why not use it for this purpose?
>>>
>>> Of course the argument ignores all the laws of physics and
>>> propagation.    I suggest you run some VOACAP prediction 
>>> calculations
>>> with 25 watts and look at what you can't work with 25-75 watts. 
>>> You
>>> may not be interested in working the other side of the world, but
>>> others are.
>>>
>>> PSK isn't magic.
>>>
>>> 73 de Brian/K3KO
>>>
>>>
>>>
>>>
>>>
>>> On 5/1/2012 11:46 PM, Jon Perelstein wrote:
>>>> Eric KG6MZS asked why wouldn't you run more than 70w on PSK
>>>>
>>>> Because with the close spacing of signals in the various PSK
>>>> sub-bands, a
>>>> signal of more than about 50watts will completely annihilate all 
>>>> the
>>>> other
>>>> PSK signals and make that sub-band unusable for everyone else.  The
>>>> rule of
>>>> thumb for being polite on PSK is to operate 25-30w max.  I won't
>>>> claim that
>>>> there aren't some who are operating more (you Cuban stations know 
>>>> who
>>>> you
>>>> are), but many/most of us will avoid QSOs with people who are
>>>> obviously
>>>> running 50w+
>>>>
>>>> 73s
>>>> Jon, WB2RYV
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>
> -- 
> Rowland R Johnson
> rowland at lascanadas.org
>
> www.lascanadas.org
> House 805-438-3673
> Cell 805-305-5252
> Fax 805-438-4970


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